For finder, this will be ok:
http://cgi.ebay.com.au/Meade-Telesco...item3f033d99dd
or this:
http://cgi.ebay.com.au/RED-DOT-FINDE...item4152eeb446
or this:
http://cgi.ebay.com.au/ws/eBayISAPI....l%3FMyEbayBeta
or this:
http://cgi.ebay.com.au/BSA-Holograph...item483b7e8403
(the last two are very well made, all metal construction)
All of those are way cheaper than Bintel and/or Andrews, and I have them all (or used to have them), they are quite adequate
As for counter-weight, a long time ago I made one from concrete - I used a plastic bottle as a mould and PVC tube in the middle for shaft. The cost: NOTHING (if I don't count couple of hours of my time)